./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-ext/31_simple_loop5_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4055c90c-5da3-4176-8ce3-763557ab7900/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4055c90c-5da3-4176-8ce3-763557ab7900/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4055c90c-5da3-4176-8ce3-763557ab7900/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4055c90c-5da3-4176-8ce3-763557ab7900/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-ext/31_simple_loop5_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4055c90c-5da3-4176-8ce3-763557ab7900/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4055c90c-5da3-4176-8ce3-763557ab7900/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3ace826ce717f8420bd44e3ebb10a0f5689c8f1d5dcaf8399a3f9b8d8dda146f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:37:08,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:37:08,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:37:08,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:37:08,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:37:08,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:37:08,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:37:08,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:37:08,120 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:37:08,121 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:37:08,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:37:08,123 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:37:08,124 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:37:08,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:37:08,126 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:37:08,127 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:37:08,128 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:37:08,129 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:37:08,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:37:08,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:37:08,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:37:08,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:37:08,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:37:08,155 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:37:08,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:37:08,158 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:37:08,159 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:37:08,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:37:08,160 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:37:08,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:37:08,161 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:37:08,162 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:37:08,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:37:08,164 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:37:08,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:37:08,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:37:08,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:37:08,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:37:08,167 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:37:08,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:37:08,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:37:08,173 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4055c90c-5da3-4176-8ce3-763557ab7900/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-20 10:37:08,209 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:37:08,209 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:37:08,210 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:37:08,211 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:37:08,212 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:37:08,212 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:37:08,214 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:37:08,214 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:37:08,215 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:37:08,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:37:08,216 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:37:08,217 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:37:08,217 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:37:08,217 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:37:08,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:37:08,218 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 10:37:08,218 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 10:37:08,218 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 10:37:08,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:37:08,220 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 10:37:08,220 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:37:08,226 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:37:08,226 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:37:08,226 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:37:08,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:37:08,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:37:08,227 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:37:08,227 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:37:08,228 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:37:08,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:37:08,229 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4055c90c-5da3-4176-8ce3-763557ab7900/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4055c90c-5da3-4176-8ce3-763557ab7900/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ace826ce717f8420bd44e3ebb10a0f5689c8f1d5dcaf8399a3f9b8d8dda146f [2022-11-20 10:37:08,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:37:08,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:37:08,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:37:08,534 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:37:08,535 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:37:08,536 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4055c90c-5da3-4176-8ce3-763557ab7900/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread-ext/31_simple_loop5_vs.i [2022-11-20 10:37:11,589 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:37:11,854 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:37:11,854 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4055c90c-5da3-4176-8ce3-763557ab7900/sv-benchmarks/c/pthread-ext/31_simple_loop5_vs.i [2022-11-20 10:37:11,867 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4055c90c-5da3-4176-8ce3-763557ab7900/bin/uautomizer-ug76WZFUDN/data/fa8a1c8b9/d129e8458f1b40fa814636ddaa322866/FLAGb1ef02c8d [2022-11-20 10:37:11,882 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4055c90c-5da3-4176-8ce3-763557ab7900/bin/uautomizer-ug76WZFUDN/data/fa8a1c8b9/d129e8458f1b40fa814636ddaa322866 [2022-11-20 10:37:11,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:37:11,896 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:37:11,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:37:11,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:37:11,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:37:11,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:37:11" (1/1) ... [2022-11-20 10:37:11,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@475dcb8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:11, skipping insertion in model container [2022-11-20 10:37:11,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:37:11" (1/1) ... [2022-11-20 10:37:11,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:37:11,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:37:12,316 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4055c90c-5da3-4176-8ce3-763557ab7900/sv-benchmarks/c/pthread-ext/31_simple_loop5_vs.i[30438,30451] [2022-11-20 10:37:12,328 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:37:12,344 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:37:12,405 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4055c90c-5da3-4176-8ce3-763557ab7900/sv-benchmarks/c/pthread-ext/31_simple_loop5_vs.i[30438,30451] [2022-11-20 10:37:12,408 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:37:12,447 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:37:12,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:12 WrapperNode [2022-11-20 10:37:12,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:37:12,449 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:37:12,449 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:37:12,449 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:37:12,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:12" (1/1) ... [2022-11-20 10:37:12,489 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:12" (1/1) ... [2022-11-20 10:37:12,519 INFO L138 Inliner]: procedures = 170, calls = 18, calls flagged for inlining = 8, calls inlined = 10, statements flattened = 83 [2022-11-20 10:37:12,519 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:37:12,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:37:12,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:37:12,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:37:12,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:12" (1/1) ... [2022-11-20 10:37:12,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:12" (1/1) ... [2022-11-20 10:37:12,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:12" (1/1) ... [2022-11-20 10:37:12,532 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:12" (1/1) ... [2022-11-20 10:37:12,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:12" (1/1) ... [2022-11-20 10:37:12,542 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:12" (1/1) ... [2022-11-20 10:37:12,549 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:12" (1/1) ... [2022-11-20 10:37:12,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:12" (1/1) ... [2022-11-20 10:37:12,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:37:12,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:37:12,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:37:12,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:37:12,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:12" (1/1) ... [2022-11-20 10:37:12,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:37:12,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4055c90c-5da3-4176-8ce3-763557ab7900/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:37:12,605 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4055c90c-5da3-4176-8ce3-763557ab7900/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:37:12,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4055c90c-5da3-4176-8ce3-763557ab7900/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:37:12,643 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-11-20 10:37:12,643 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-11-20 10:37:12,643 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-20 10:37:12,643 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-20 10:37:12,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:37:12,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:37:12,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:37:12,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:37:12,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:37:12,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:37:12,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:37:12,647 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 10:37:12,775 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:37:12,777 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:37:12,985 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:37:13,064 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:37:13,064 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 10:37:13,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:37:13 BoogieIcfgContainer [2022-11-20 10:37:13,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:37:13,069 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:37:13,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:37:13,073 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:37:13,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:37:11" (1/3) ... [2022-11-20 10:37:13,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3992f1d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:37:13, skipping insertion in model container [2022-11-20 10:37:13,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:37:12" (2/3) ... [2022-11-20 10:37:13,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3992f1d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:37:13, skipping insertion in model container [2022-11-20 10:37:13,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:37:13" (3/3) ... [2022-11-20 10:37:13,076 INFO L112 eAbstractionObserver]: Analyzing ICFG 31_simple_loop5_vs.i [2022-11-20 10:37:13,095 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:37:13,095 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-20 10:37:13,095 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:37:13,178 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 10:37:13,232 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 10:37:13,257 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 73 transitions, 156 flow [2022-11-20 10:37:13,267 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 73 transitions, 156 flow [2022-11-20 10:37:13,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 73 transitions, 156 flow [2022-11-20 10:37:13,351 INFO L130 PetriNetUnfolder]: 7/88 cut-off events. [2022-11-20 10:37:13,351 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:37:13,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 88 events. 7/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 153 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 66. Up to 4 conditions per place. [2022-11-20 10:37:13,367 INFO L119 LiptonReduction]: Number of co-enabled transitions 1340 [2022-11-20 10:37:15,597 INFO L134 LiptonReduction]: Checked pairs total: 2316 [2022-11-20 10:37:15,598 INFO L136 LiptonReduction]: Total number of compositions: 62 [2022-11-20 10:37:15,606 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 27 transitions, 64 flow [2022-11-20 10:37:15,649 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 327 states, 309 states have (on average 3.0776699029126213) internal successors, (951), 326 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:15,667 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:37:15,673 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7a45cc7c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:37:15,673 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-20 10:37:15,677 INFO L276 IsEmpty]: Start isEmpty. Operand has 327 states, 309 states have (on average 3.0776699029126213) internal successors, (951), 326 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:15,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-20 10:37:15,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:15,682 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-20 10:37:15,683 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-20 10:37:15,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:15,688 INFO L85 PathProgramCache]: Analyzing trace with hash 395, now seen corresponding path program 1 times [2022-11-20 10:37:15,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:15,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774457661] [2022-11-20 10:37:15,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:15,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:15,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:15,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:15,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:15,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774457661] [2022-11-20 10:37:15,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774457661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:15,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:15,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-20 10:37:15,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267651901] [2022-11-20 10:37:15,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:15,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 10:37:15,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:15,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 10:37:15,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:37:15,826 INFO L87 Difference]: Start difference. First operand has 327 states, 309 states have (on average 3.0776699029126213) internal successors, (951), 326 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:15,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:15,879 INFO L93 Difference]: Finished difference Result 177 states and 477 transitions. [2022-11-20 10:37:15,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 10:37:15,881 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2022-11-20 10:37:15,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:15,892 INFO L225 Difference]: With dead ends: 177 [2022-11-20 10:37:15,892 INFO L226 Difference]: Without dead ends: 177 [2022-11-20 10:37:15,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:37:15,897 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:15,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:37:15,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-20 10:37:15,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2022-11-20 10:37:15,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 175 states have (on average 2.7257142857142855) internal successors, (477), 176 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:15,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 477 transitions. [2022-11-20 10:37:15,947 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 477 transitions. Word has length 1 [2022-11-20 10:37:15,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:15,947 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 477 transitions. [2022-11-20 10:37:15,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:15,948 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 477 transitions. [2022-11-20 10:37:15,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 10:37:15,967 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:15,967 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 10:37:15,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:37:15,967 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-20 10:37:15,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:15,968 INFO L85 PathProgramCache]: Analyzing trace with hash 12127916, now seen corresponding path program 1 times [2022-11-20 10:37:15,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:15,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612125706] [2022-11-20 10:37:15,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:15,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:15,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:16,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:16,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:16,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612125706] [2022-11-20 10:37:16,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612125706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:16,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:16,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:37:16,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911328858] [2022-11-20 10:37:16,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:16,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:37:16,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:16,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:37:16,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:16,105 INFO L87 Difference]: Start difference. First operand 177 states and 477 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:16,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:16,135 INFO L93 Difference]: Finished difference Result 147 states and 392 transitions. [2022-11-20 10:37:16,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:37:16,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-20 10:37:16,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:16,138 INFO L225 Difference]: With dead ends: 147 [2022-11-20 10:37:16,138 INFO L226 Difference]: Without dead ends: 147 [2022-11-20 10:37:16,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:16,139 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:16,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 4 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:37:16,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-11-20 10:37:16,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2022-11-20 10:37:16,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 2.684931506849315) internal successors, (392), 146 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:16,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 392 transitions. [2022-11-20 10:37:16,152 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 392 transitions. Word has length 4 [2022-11-20 10:37:16,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:16,152 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 392 transitions. [2022-11-20 10:37:16,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:16,153 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 392 transitions. [2022-11-20 10:37:16,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 10:37:16,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:16,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 10:37:16,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:37:16,154 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-20 10:37:16,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:16,154 INFO L85 PathProgramCache]: Analyzing trace with hash 12127917, now seen corresponding path program 1 times [2022-11-20 10:37:16,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:16,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996610290] [2022-11-20 10:37:16,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:16,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:16,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:16,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:16,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:16,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996610290] [2022-11-20 10:37:16,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996610290] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:16,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:16,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:37:16,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777591958] [2022-11-20 10:37:16,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:16,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:37:16,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:16,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:37:16,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:16,295 INFO L87 Difference]: Start difference. First operand 147 states and 392 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:16,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:16,323 INFO L93 Difference]: Finished difference Result 117 states and 307 transitions. [2022-11-20 10:37:16,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:37:16,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-20 10:37:16,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:16,325 INFO L225 Difference]: With dead ends: 117 [2022-11-20 10:37:16,325 INFO L226 Difference]: Without dead ends: 117 [2022-11-20 10:37:16,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:16,327 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 14 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:16,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 4 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:37:16,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-20 10:37:16,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2022-11-20 10:37:16,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 117 states have (on average 2.623931623931624) internal successors, (307), 116 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:16,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 307 transitions. [2022-11-20 10:37:16,347 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 307 transitions. Word has length 4 [2022-11-20 10:37:16,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:16,348 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 307 transitions. [2022-11-20 10:37:16,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:16,348 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 307 transitions. [2022-11-20 10:37:16,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 10:37:16,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:16,349 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 10:37:16,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:37:16,350 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-20 10:37:16,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:16,350 INFO L85 PathProgramCache]: Analyzing trace with hash 375921308, now seen corresponding path program 1 times [2022-11-20 10:37:16,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:16,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331730005] [2022-11-20 10:37:16,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:16,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:16,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:16,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:16,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:16,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331730005] [2022-11-20 10:37:16,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331730005] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:16,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:16,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:37:16,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693002929] [2022-11-20 10:37:16,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:16,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:37:16,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:16,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:37:16,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:16,456 INFO L87 Difference]: Start difference. First operand 117 states and 307 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:16,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:16,483 INFO L93 Difference]: Finished difference Result 142 states and 378 transitions. [2022-11-20 10:37:16,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:37:16,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 10:37:16,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:16,484 INFO L225 Difference]: With dead ends: 142 [2022-11-20 10:37:16,485 INFO L226 Difference]: Without dead ends: 142 [2022-11-20 10:37:16,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:16,486 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 9 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:16,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 5 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:37:16,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-11-20 10:37:16,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2022-11-20 10:37:16,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 142 states have (on average 2.6619718309859155) internal successors, (378), 141 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:16,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 378 transitions. [2022-11-20 10:37:16,496 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 378 transitions. Word has length 5 [2022-11-20 10:37:16,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:16,496 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 378 transitions. [2022-11-20 10:37:16,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:16,496 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 378 transitions. [2022-11-20 10:37:16,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 10:37:16,497 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:16,497 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-20 10:37:16,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:37:16,498 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-20 10:37:16,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:16,498 INFO L85 PathProgramCache]: Analyzing trace with hash -878368872, now seen corresponding path program 1 times [2022-11-20 10:37:16,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:16,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468214772] [2022-11-20 10:37:16,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:16,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:16,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:37:16,533 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:37:16,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:37:16,588 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:37:16,588 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 10:37:16,589 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2022-11-20 10:37:16,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (7 of 9 remaining) [2022-11-20 10:37:16,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2022-11-20 10:37:16,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2022-11-20 10:37:16,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (4 of 9 remaining) [2022-11-20 10:37:16,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2022-11-20 10:37:16,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 9 remaining) [2022-11-20 10:37:16,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 9 remaining) [2022-11-20 10:37:16,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining) [2022-11-20 10:37:16,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:37:16,596 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-20 10:37:16,598 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 10:37:16,598 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-20 10:37:16,633 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 10:37:16,641 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 10:37:16,642 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 100 transitions, 224 flow [2022-11-20 10:37:16,642 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 100 transitions, 224 flow [2022-11-20 10:37:16,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 100 transitions, 224 flow [2022-11-20 10:37:16,671 INFO L130 PetriNetUnfolder]: 10/119 cut-off events. [2022-11-20 10:37:16,671 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 10:37:16,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 119 events. 10/119 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 241 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 128. Up to 6 conditions per place. [2022-11-20 10:37:16,675 INFO L119 LiptonReduction]: Number of co-enabled transitions 2446 [2022-11-20 10:37:18,806 INFO L134 LiptonReduction]: Checked pairs total: 6910 [2022-11-20 10:37:18,806 INFO L136 LiptonReduction]: Total number of compositions: 79 [2022-11-20 10:37:18,807 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 50 places, 45 transitions, 114 flow [2022-11-20 10:37:18,999 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3819 states, 3794 states have (on average 3.9688982604111755) internal successors, (15058), 3818 states have internal predecessors, (15058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:19,001 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:37:19,002 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7a45cc7c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:37:19,002 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-20 10:37:19,015 INFO L276 IsEmpty]: Start isEmpty. Operand has 3819 states, 3794 states have (on average 3.9688982604111755) internal successors, (15058), 3818 states have internal predecessors, (15058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:19,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-20 10:37:19,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:19,016 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-20 10:37:19,016 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-20 10:37:19,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:19,017 INFO L85 PathProgramCache]: Analyzing trace with hash 602, now seen corresponding path program 1 times [2022-11-20 10:37:19,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:19,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907930173] [2022-11-20 10:37:19,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:19,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:19,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:19,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:19,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907930173] [2022-11-20 10:37:19,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907930173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:19,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:19,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-20 10:37:19,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337315786] [2022-11-20 10:37:19,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:19,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 10:37:19,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:19,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 10:37:19,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:37:19,041 INFO L87 Difference]: Start difference. First operand has 3819 states, 3794 states have (on average 3.9688982604111755) internal successors, (15058), 3818 states have internal predecessors, (15058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:19,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:19,101 INFO L93 Difference]: Finished difference Result 1957 states and 7307 transitions. [2022-11-20 10:37:19,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 10:37:19,101 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2022-11-20 10:37:19,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:19,123 INFO L225 Difference]: With dead ends: 1957 [2022-11-20 10:37:19,123 INFO L226 Difference]: Without dead ends: 1957 [2022-11-20 10:37:19,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:37:19,124 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:19,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:37:19,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1957 states. [2022-11-20 10:37:19,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1957 to 1957. [2022-11-20 10:37:19,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1957 states, 1955 states have (on average 3.7375959079283887) internal successors, (7307), 1956 states have internal predecessors, (7307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:19,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 7307 transitions. [2022-11-20 10:37:19,239 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 7307 transitions. Word has length 1 [2022-11-20 10:37:19,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:19,239 INFO L495 AbstractCegarLoop]: Abstraction has 1957 states and 7307 transitions. [2022-11-20 10:37:19,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:19,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 7307 transitions. [2022-11-20 10:37:19,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 10:37:19,240 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:19,240 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 10:37:19,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:37:19,240 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-20 10:37:19,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:19,241 INFO L85 PathProgramCache]: Analyzing trace with hash 570018069, now seen corresponding path program 1 times [2022-11-20 10:37:19,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:19,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938569783] [2022-11-20 10:37:19,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:19,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:19,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:19,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:19,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938569783] [2022-11-20 10:37:19,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938569783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:19,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:19,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:37:19,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284719519] [2022-11-20 10:37:19,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:19,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:37:19,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:19,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:37:19,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:19,303 INFO L87 Difference]: Start difference. First operand 1957 states and 7307 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:19,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:19,341 INFO L93 Difference]: Finished difference Result 1672 states and 6212 transitions. [2022-11-20 10:37:19,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:37:19,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 10:37:19,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:19,355 INFO L225 Difference]: With dead ends: 1672 [2022-11-20 10:37:19,355 INFO L226 Difference]: Without dead ends: 1672 [2022-11-20 10:37:19,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:19,356 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 26 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:19,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 17 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:37:19,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1672 states. [2022-11-20 10:37:19,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1672 to 1672. [2022-11-20 10:37:19,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1672 states, 1671 states have (on average 3.717534410532615) internal successors, (6212), 1671 states have internal predecessors, (6212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:19,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1672 states to 1672 states and 6212 transitions. [2022-11-20 10:37:19,421 INFO L78 Accepts]: Start accepts. Automaton has 1672 states and 6212 transitions. Word has length 5 [2022-11-20 10:37:19,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:19,421 INFO L495 AbstractCegarLoop]: Abstraction has 1672 states and 6212 transitions. [2022-11-20 10:37:19,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:19,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1672 states and 6212 transitions. [2022-11-20 10:37:19,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 10:37:19,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:19,422 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 10:37:19,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:37:19,422 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-20 10:37:19,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:19,423 INFO L85 PathProgramCache]: Analyzing trace with hash 570018070, now seen corresponding path program 1 times [2022-11-20 10:37:19,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:19,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553742117] [2022-11-20 10:37:19,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:19,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:19,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:19,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:19,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553742117] [2022-11-20 10:37:19,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553742117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:19,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:19,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:37:19,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071189866] [2022-11-20 10:37:19,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:19,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:37:19,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:19,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:37:19,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:19,493 INFO L87 Difference]: Start difference. First operand 1672 states and 6212 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:19,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:19,523 INFO L93 Difference]: Finished difference Result 1387 states and 5117 transitions. [2022-11-20 10:37:19,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:37:19,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 10:37:19,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:19,540 INFO L225 Difference]: With dead ends: 1387 [2022-11-20 10:37:19,540 INFO L226 Difference]: Without dead ends: 1387 [2022-11-20 10:37:19,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:19,544 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:19,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 17 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:37:19,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2022-11-20 10:37:19,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 1387. [2022-11-20 10:37:19,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1387 states, 1387 states have (on average 3.689257390050469) internal successors, (5117), 1386 states have internal predecessors, (5117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:19,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 5117 transitions. [2022-11-20 10:37:19,617 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 5117 transitions. Word has length 5 [2022-11-20 10:37:19,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:19,617 INFO L495 AbstractCegarLoop]: Abstraction has 1387 states and 5117 transitions. [2022-11-20 10:37:19,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:19,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 5117 transitions. [2022-11-20 10:37:19,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 10:37:19,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:19,619 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 10:37:19,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:37:19,619 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-20 10:37:19,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:19,620 INFO L85 PathProgramCache]: Analyzing trace with hash 570076855, now seen corresponding path program 1 times [2022-11-20 10:37:19,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:19,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016014391] [2022-11-20 10:37:19,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:19,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:19,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:19,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:19,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:19,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016014391] [2022-11-20 10:37:19,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016014391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:19,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:19,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:37:19,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7252099] [2022-11-20 10:37:19,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:19,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:37:19,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:19,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:37:19,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:19,687 INFO L87 Difference]: Start difference. First operand 1387 states and 5117 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:19,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:19,766 INFO L93 Difference]: Finished difference Result 2253 states and 8351 transitions. [2022-11-20 10:37:19,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:37:19,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 10:37:19,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:19,783 INFO L225 Difference]: With dead ends: 2253 [2022-11-20 10:37:19,783 INFO L226 Difference]: Without dead ends: 2253 [2022-11-20 10:37:19,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:19,785 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 20 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:19,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 24 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:37:19,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2253 states. [2022-11-20 10:37:19,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2253 to 2253. [2022-11-20 10:37:19,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2253 states, 2253 states have (on average 3.706613404349756) internal successors, (8351), 2252 states have internal predecessors, (8351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:19,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2253 states to 2253 states and 8351 transitions. [2022-11-20 10:37:19,872 INFO L78 Accepts]: Start accepts. Automaton has 2253 states and 8351 transitions. Word has length 5 [2022-11-20 10:37:19,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:19,873 INFO L495 AbstractCegarLoop]: Abstraction has 2253 states and 8351 transitions. [2022-11-20 10:37:19,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:19,873 INFO L276 IsEmpty]: Start isEmpty. Operand 2253 states and 8351 transitions. [2022-11-20 10:37:19,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 10:37:19,876 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:19,876 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:37:19,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 10:37:19,877 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-20 10:37:19,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:19,878 INFO L85 PathProgramCache]: Analyzing trace with hash -189027244, now seen corresponding path program 1 times [2022-11-20 10:37:19,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:19,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698667064] [2022-11-20 10:37:19,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:19,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:19,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:19,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:19,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:19,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698667064] [2022-11-20 10:37:19,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698667064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:19,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:19,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:37:19,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077797205] [2022-11-20 10:37:19,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:19,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:37:19,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:19,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:37:19,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:19,968 INFO L87 Difference]: Start difference. First operand 2253 states and 8351 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:19,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:19,999 INFO L93 Difference]: Finished difference Result 542 states and 1538 transitions. [2022-11-20 10:37:20,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:37:20,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-20 10:37:20,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:20,003 INFO L225 Difference]: With dead ends: 542 [2022-11-20 10:37:20,003 INFO L226 Difference]: Without dead ends: 542 [2022-11-20 10:37:20,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:20,004 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 19 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:20,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 33 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:37:20,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2022-11-20 10:37:20,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 446. [2022-11-20 10:37:20,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 2.8629213483146065) internal successors, (1274), 445 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:20,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 1274 transitions. [2022-11-20 10:37:20,019 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 1274 transitions. Word has length 13 [2022-11-20 10:37:20,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:20,019 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 1274 transitions. [2022-11-20 10:37:20,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:20,019 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 1274 transitions. [2022-11-20 10:37:20,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 10:37:20,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:20,021 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:37:20,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 10:37:20,021 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-20 10:37:20,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:20,022 INFO L85 PathProgramCache]: Analyzing trace with hash 505989184, now seen corresponding path program 1 times [2022-11-20 10:37:20,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:20,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345642586] [2022-11-20 10:37:20,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:20,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:20,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:37:20,057 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:37:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:37:20,068 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:37:20,069 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 10:37:20,069 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-20 10:37:20,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (8 of 10 remaining) [2022-11-20 10:37:20,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2022-11-20 10:37:20,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2022-11-20 10:37:20,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (5 of 10 remaining) [2022-11-20 10:37:20,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 10 remaining) [2022-11-20 10:37:20,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 10 remaining) [2022-11-20 10:37:20,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 10 remaining) [2022-11-20 10:37:20,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 10 remaining) [2022-11-20 10:37:20,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 10 remaining) [2022-11-20 10:37:20,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 10:37:20,071 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-20 10:37:20,072 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 10:37:20,072 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-20 10:37:20,096 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 10:37:20,098 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 10:37:20,099 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 125 places, 127 transitions, 296 flow [2022-11-20 10:37:20,099 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 125 places, 127 transitions, 296 flow [2022-11-20 10:37:20,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 127 transitions, 296 flow [2022-11-20 10:37:20,126 INFO L130 PetriNetUnfolder]: 13/150 cut-off events. [2022-11-20 10:37:20,126 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-20 10:37:20,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 150 events. 13/150 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 337 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 164. Up to 8 conditions per place. [2022-11-20 10:37:20,131 INFO L119 LiptonReduction]: Number of co-enabled transitions 3864 [2022-11-20 10:37:22,430 INFO L134 LiptonReduction]: Checked pairs total: 11222 [2022-11-20 10:37:22,430 INFO L136 LiptonReduction]: Total number of compositions: 102 [2022-11-20 10:37:22,431 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 66 places, 59 transitions, 160 flow [2022-11-20 10:37:23,796 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 30571 states, 30539 states have (on average 4.946396411146403) internal successors, (151058), 30570 states have internal predecessors, (151058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:23,797 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:37:23,798 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7a45cc7c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:37:23,798 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-20 10:37:23,857 INFO L276 IsEmpty]: Start isEmpty. Operand has 30571 states, 30539 states have (on average 4.946396411146403) internal successors, (151058), 30570 states have internal predecessors, (151058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:23,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-20 10:37:23,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:23,857 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-20 10:37:23,858 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-20 10:37:23,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:23,859 INFO L85 PathProgramCache]: Analyzing trace with hash 857, now seen corresponding path program 1 times [2022-11-20 10:37:23,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:23,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025848872] [2022-11-20 10:37:23,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:23,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:23,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:23,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:23,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:23,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025848872] [2022-11-20 10:37:23,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025848872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:23,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:23,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-20 10:37:23,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382035720] [2022-11-20 10:37:23,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:23,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 10:37:23,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:23,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 10:37:23,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:37:23,925 INFO L87 Difference]: Start difference. First operand has 30571 states, 30539 states have (on average 4.946396411146403) internal successors, (151058), 30570 states have internal predecessors, (151058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:24,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:24,686 INFO L93 Difference]: Finished difference Result 13717 states and 64882 transitions. [2022-11-20 10:37:24,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 10:37:24,687 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2022-11-20 10:37:24,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:24,942 INFO L225 Difference]: With dead ends: 13717 [2022-11-20 10:37:24,942 INFO L226 Difference]: Without dead ends: 13717 [2022-11-20 10:37:24,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:37:24,943 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:24,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:37:25,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13717 states. [2022-11-20 10:37:25,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13717 to 13717. [2022-11-20 10:37:25,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13717 states, 13715 states have (on average 4.73073277433467) internal successors, (64882), 13716 states have internal predecessors, (64882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:25,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13717 states to 13717 states and 64882 transitions. [2022-11-20 10:37:25,976 INFO L78 Accepts]: Start accepts. Automaton has 13717 states and 64882 transitions. Word has length 1 [2022-11-20 10:37:25,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:25,977 INFO L495 AbstractCegarLoop]: Abstraction has 13717 states and 64882 transitions. [2022-11-20 10:37:25,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:25,977 INFO L276 IsEmpty]: Start isEmpty. Operand 13717 states and 64882 transitions. [2022-11-20 10:37:25,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 10:37:25,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:25,978 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 10:37:25,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 10:37:25,978 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-20 10:37:25,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:25,979 INFO L85 PathProgramCache]: Analyzing trace with hash 815372811, now seen corresponding path program 1 times [2022-11-20 10:37:25,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:25,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861410131] [2022-11-20 10:37:25,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:25,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:25,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:26,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:26,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:26,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861410131] [2022-11-20 10:37:26,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861410131] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:26,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:26,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:37:26,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850756917] [2022-11-20 10:37:26,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:26,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:37:26,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:26,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:37:26,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:26,030 INFO L87 Difference]: Start difference. First operand 13717 states and 64882 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:26,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:26,328 INFO L93 Difference]: Finished difference Result 11717 states and 55212 transitions. [2022-11-20 10:37:26,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:37:26,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 10:37:26,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:26,425 INFO L225 Difference]: With dead ends: 11717 [2022-11-20 10:37:26,425 INFO L226 Difference]: Without dead ends: 11717 [2022-11-20 10:37:26,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:26,426 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 34 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:26,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 22 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:37:26,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11717 states. [2022-11-20 10:37:27,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11717 to 11717. [2022-11-20 10:37:27,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11717 states, 11716 states have (on average 4.712529873677023) internal successors, (55212), 11716 states have internal predecessors, (55212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:27,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11717 states to 11717 states and 55212 transitions. [2022-11-20 10:37:27,122 INFO L78 Accepts]: Start accepts. Automaton has 11717 states and 55212 transitions. Word has length 5 [2022-11-20 10:37:27,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:27,122 INFO L495 AbstractCegarLoop]: Abstraction has 11717 states and 55212 transitions. [2022-11-20 10:37:27,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:27,123 INFO L276 IsEmpty]: Start isEmpty. Operand 11717 states and 55212 transitions. [2022-11-20 10:37:27,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 10:37:27,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:27,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 10:37:27,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 10:37:27,126 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-20 10:37:27,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:27,126 INFO L85 PathProgramCache]: Analyzing trace with hash 815372812, now seen corresponding path program 1 times [2022-11-20 10:37:27,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:27,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561460076] [2022-11-20 10:37:27,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:27,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:27,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:27,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:27,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:27,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561460076] [2022-11-20 10:37:27,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561460076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:27,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:27,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:37:27,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979896488] [2022-11-20 10:37:27,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:27,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:37:27,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:27,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:37:27,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:27,186 INFO L87 Difference]: Start difference. First operand 11717 states and 55212 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:27,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:27,563 INFO L93 Difference]: Finished difference Result 9717 states and 45542 transitions. [2022-11-20 10:37:27,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:37:27,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 10:37:27,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:27,639 INFO L225 Difference]: With dead ends: 9717 [2022-11-20 10:37:27,639 INFO L226 Difference]: Without dead ends: 9717 [2022-11-20 10:37:27,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:27,640 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:27,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 22 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:37:27,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9717 states. [2022-11-20 10:37:28,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9717 to 9717. [2022-11-20 10:37:28,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9717 states, 9717 states have (on average 4.686837501286405) internal successors, (45542), 9716 states have internal predecessors, (45542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:28,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9717 states to 9717 states and 45542 transitions. [2022-11-20 10:37:28,141 INFO L78 Accepts]: Start accepts. Automaton has 9717 states and 45542 transitions. Word has length 5 [2022-11-20 10:37:28,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:28,141 INFO L495 AbstractCegarLoop]: Abstraction has 9717 states and 45542 transitions. [2022-11-20 10:37:28,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:28,142 INFO L276 IsEmpty]: Start isEmpty. Operand 9717 states and 45542 transitions. [2022-11-20 10:37:28,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 10:37:28,143 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:28,143 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 10:37:28,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 10:37:28,144 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-20 10:37:28,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:28,144 INFO L85 PathProgramCache]: Analyzing trace with hash 815444154, now seen corresponding path program 1 times [2022-11-20 10:37:28,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:28,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351062036] [2022-11-20 10:37:28,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:28,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:28,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:28,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:28,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351062036] [2022-11-20 10:37:28,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351062036] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:28,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:28,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:37:28,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251148953] [2022-11-20 10:37:28,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:28,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:37:28,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:28,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:37:28,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:28,179 INFO L87 Difference]: Start difference. First operand 9717 states and 45542 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:28,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:28,488 INFO L93 Difference]: Finished difference Result 15865 states and 74414 transitions. [2022-11-20 10:37:28,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:37:28,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 10:37:28,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:28,592 INFO L225 Difference]: With dead ends: 15865 [2022-11-20 10:37:28,593 INFO L226 Difference]: Without dead ends: 15865 [2022-11-20 10:37:28,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:28,594 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 26 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:28,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 31 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:37:28,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15865 states. [2022-11-20 10:37:29,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15865 to 15865. [2022-11-20 10:37:29,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15865 states, 15865 states have (on average 4.690450677592184) internal successors, (74414), 15864 states have internal predecessors, (74414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:29,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15865 states to 15865 states and 74414 transitions. [2022-11-20 10:37:29,626 INFO L78 Accepts]: Start accepts. Automaton has 15865 states and 74414 transitions. Word has length 5 [2022-11-20 10:37:29,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:29,626 INFO L495 AbstractCegarLoop]: Abstraction has 15865 states and 74414 transitions. [2022-11-20 10:37:29,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:29,627 INFO L276 IsEmpty]: Start isEmpty. Operand 15865 states and 74414 transitions. [2022-11-20 10:37:29,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 10:37:29,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:29,628 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:37:29,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 10:37:29,629 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-20 10:37:29,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:29,629 INFO L85 PathProgramCache]: Analyzing trace with hash -249062117, now seen corresponding path program 1 times [2022-11-20 10:37:29,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:29,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727165464] [2022-11-20 10:37:29,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:29,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:29,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:29,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:29,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:29,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727165464] [2022-11-20 10:37:29,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727165464] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:29,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:29,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:37:29,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340013213] [2022-11-20 10:37:29,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:29,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:37:29,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:29,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:37:29,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:37:29,784 INFO L87 Difference]: Start difference. First operand 15865 states and 74414 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:29,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:29,839 INFO L93 Difference]: Finished difference Result 1598 states and 5330 transitions. [2022-11-20 10:37:29,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:37:29,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-20 10:37:29,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:29,845 INFO L225 Difference]: With dead ends: 1598 [2022-11-20 10:37:29,846 INFO L226 Difference]: Without dead ends: 1598 [2022-11-20 10:37:29,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:37:29,847 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 83 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:29,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 40 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:37:29,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2022-11-20 10:37:29,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1278. [2022-11-20 10:37:29,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1278 states, 1277 states have (on average 3.371965544244323) internal successors, (4306), 1277 states have internal predecessors, (4306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:29,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 4306 transitions. [2022-11-20 10:37:29,890 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 4306 transitions. Word has length 13 [2022-11-20 10:37:29,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:29,890 INFO L495 AbstractCegarLoop]: Abstraction has 1278 states and 4306 transitions. [2022-11-20 10:37:29,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:29,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 4306 transitions. [2022-11-20 10:37:29,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 10:37:29,891 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:29,891 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:37:29,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 10:37:29,892 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-20 10:37:29,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:29,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1946525945, now seen corresponding path program 1 times [2022-11-20 10:37:29,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:29,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817673288] [2022-11-20 10:37:29,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:29,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:29,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:29,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:29,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:29,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817673288] [2022-11-20 10:37:29,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817673288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:29,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:29,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:37:29,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930896182] [2022-11-20 10:37:29,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:29,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:37:29,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:29,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:37:29,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:37:29,991 INFO L87 Difference]: Start difference. First operand 1278 states and 4306 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:30,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:30,132 INFO L93 Difference]: Finished difference Result 2857 states and 9542 transitions. [2022-11-20 10:37:30,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:37:30,133 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-20 10:37:30,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:30,144 INFO L225 Difference]: With dead ends: 2857 [2022-11-20 10:37:30,144 INFO L226 Difference]: Without dead ends: 2857 [2022-11-20 10:37:30,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:37:30,147 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 72 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:30,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 71 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:37:30,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2022-11-20 10:37:30,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 2282. [2022-11-20 10:37:30,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2282 states, 2281 states have (on average 3.3397632617273127) internal successors, (7618), 2281 states have internal predecessors, (7618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:30,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2282 states to 2282 states and 7618 transitions. [2022-11-20 10:37:30,240 INFO L78 Accepts]: Start accepts. Automaton has 2282 states and 7618 transitions. Word has length 16 [2022-11-20 10:37:30,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:30,240 INFO L495 AbstractCegarLoop]: Abstraction has 2282 states and 7618 transitions. [2022-11-20 10:37:30,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:30,241 INFO L276 IsEmpty]: Start isEmpty. Operand 2282 states and 7618 transitions. [2022-11-20 10:37:30,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 10:37:30,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:30,243 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:37:30,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 10:37:30,243 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-20 10:37:30,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:30,244 INFO L85 PathProgramCache]: Analyzing trace with hash -414251569, now seen corresponding path program 1 times [2022-11-20 10:37:30,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:30,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965567934] [2022-11-20 10:37:30,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:30,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:30,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:37:30,263 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:37:30,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:37:30,287 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:37:30,288 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 10:37:30,288 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-20 10:37:30,288 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (9 of 11 remaining) [2022-11-20 10:37:30,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2022-11-20 10:37:30,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2022-11-20 10:37:30,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (6 of 11 remaining) [2022-11-20 10:37:30,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2022-11-20 10:37:30,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 11 remaining) [2022-11-20 10:37:30,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 11 remaining) [2022-11-20 10:37:30,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 11 remaining) [2022-11-20 10:37:30,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 11 remaining) [2022-11-20 10:37:30,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 11 remaining) [2022-11-20 10:37:30,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 10:37:30,293 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:37:30,294 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 10:37:30,294 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-20 10:37:30,345 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 10:37:30,352 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 10:37:30,353 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 151 places, 154 transitions, 372 flow [2022-11-20 10:37:30,353 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 151 places, 154 transitions, 372 flow [2022-11-20 10:37:30,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 154 transitions, 372 flow [2022-11-20 10:37:30,418 INFO L130 PetriNetUnfolder]: 16/181 cut-off events. [2022-11-20 10:37:30,418 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-20 10:37:30,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 181 events. 16/181 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 418 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 201. Up to 10 conditions per place. [2022-11-20 10:37:30,428 INFO L119 LiptonReduction]: Number of co-enabled transitions 5594 [2022-11-20 10:37:33,295 INFO L134 LiptonReduction]: Checked pairs total: 19499 [2022-11-20 10:37:33,296 INFO L136 LiptonReduction]: Total number of compositions: 119 [2022-11-20 10:37:33,298 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 82 places, 73 transitions, 210 flow [2022-11-20 10:37:43,757 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 244587 states, 244548 states have (on average 5.94187644143481) internal successors, (1453074), 244586 states have internal predecessors, (1453074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:43,758 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:37:43,758 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7a45cc7c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:37:43,759 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-20 10:37:44,078 INFO L276 IsEmpty]: Start isEmpty. Operand has 244587 states, 244548 states have (on average 5.94187644143481) internal successors, (1453074), 244586 states have internal predecessors, (1453074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:44,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-20 10:37:44,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:44,078 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-20 10:37:44,079 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-20 10:37:44,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:44,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1158, now seen corresponding path program 1 times [2022-11-20 10:37:44,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:44,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131862727] [2022-11-20 10:37:44,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:44,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:44,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:44,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:44,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131862727] [2022-11-20 10:37:44,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131862727] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:44,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:44,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-20 10:37:44,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082829494] [2022-11-20 10:37:44,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:44,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 10:37:44,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:44,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 10:37:44,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:37:44,539 INFO L87 Difference]: Start difference. First operand has 244587 states, 244548 states have (on average 5.94187644143481) internal successors, (1453074), 244586 states have internal predecessors, (1453074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:46,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:46,981 INFO L93 Difference]: Finished difference Result 96037 states and 550227 transitions. [2022-11-20 10:37:46,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 10:37:46,982 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2022-11-20 10:37:46,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:48,892 INFO L225 Difference]: With dead ends: 96037 [2022-11-20 10:37:48,892 INFO L226 Difference]: Without dead ends: 96037 [2022-11-20 10:37:48,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:37:48,893 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:48,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:37:49,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96037 states. [2022-11-20 10:37:53,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96037 to 96037. [2022-11-20 10:37:53,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96037 states, 96035 states have (on average 5.729442390795023) internal successors, (550227), 96036 states have internal predecessors, (550227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:54,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96037 states to 96037 states and 550227 transitions. [2022-11-20 10:37:54,927 INFO L78 Accepts]: Start accepts. Automaton has 96037 states and 550227 transitions. Word has length 1 [2022-11-20 10:37:54,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:54,927 INFO L495 AbstractCegarLoop]: Abstraction has 96037 states and 550227 transitions. [2022-11-20 10:37:54,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:54,928 INFO L276 IsEmpty]: Start isEmpty. Operand 96037 states and 550227 transitions. [2022-11-20 10:37:54,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 10:37:54,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:54,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 10:37:54,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 10:37:54,928 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-20 10:37:54,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:54,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1099207589, now seen corresponding path program 1 times [2022-11-20 10:37:54,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:54,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159820318] [2022-11-20 10:37:54,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:54,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:54,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:54,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:54,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:54,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159820318] [2022-11-20 10:37:54,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159820318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:54,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:54,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:37:54,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52394077] [2022-11-20 10:37:54,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:54,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:37:54,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:54,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:37:54,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:54,982 INFO L87 Difference]: Start difference. First operand 96037 states and 550227 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:56,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:56,856 INFO L93 Difference]: Finished difference Result 82032 states and 468527 transitions. [2022-11-20 10:37:56,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:37:56,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 10:37:56,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:57,488 INFO L225 Difference]: With dead ends: 82032 [2022-11-20 10:37:57,488 INFO L226 Difference]: Without dead ends: 82032 [2022-11-20 10:37:57,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:57,488 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 42 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:57,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 27 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:37:57,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82032 states. [2022-11-20 10:38:01,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82032 to 82032. [2022-11-20 10:38:01,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82032 states, 82031 states have (on average 5.711584644829394) internal successors, (468527), 82031 states have internal predecessors, (468527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:38:02,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82032 states to 82032 states and 468527 transitions. [2022-11-20 10:38:02,758 INFO L78 Accepts]: Start accepts. Automaton has 82032 states and 468527 transitions. Word has length 5 [2022-11-20 10:38:02,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:38:02,758 INFO L495 AbstractCegarLoop]: Abstraction has 82032 states and 468527 transitions. [2022-11-20 10:38:02,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:38:02,758 INFO L276 IsEmpty]: Start isEmpty. Operand 82032 states and 468527 transitions. [2022-11-20 10:38:02,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 10:38:02,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:38:02,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 10:38:02,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 10:38:02,759 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-20 10:38:02,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:02,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1099207590, now seen corresponding path program 1 times [2022-11-20 10:38:02,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:38:02,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656217581] [2022-11-20 10:38:02,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:02,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:38:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:02,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:38:02,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:38:02,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656217581] [2022-11-20 10:38:02,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656217581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:38:02,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:38:02,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:38:02,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843839525] [2022-11-20 10:38:02,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:38:02,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:38:02,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:38:02,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:38:02,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:38:02,870 INFO L87 Difference]: Start difference. First operand 82032 states and 468527 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:38:03,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:38:03,663 INFO L93 Difference]: Finished difference Result 68027 states and 386827 transitions. [2022-11-20 10:38:03,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:38:03,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 10:38:03,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:38:05,350 INFO L225 Difference]: With dead ends: 68027 [2022-11-20 10:38:05,350 INFO L226 Difference]: Without dead ends: 68027 [2022-11-20 10:38:05,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:38:05,351 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 41 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:38:05,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 27 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:38:05,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68027 states.